Fluid-cooled roll



" May 5, 1925.

A. E. EVANS FLUID COOLED ROLL Fil ed-May 13, 1924 //V VENTUR Patented May 5, .1925.

UNITED STATES rarer ALBERT E. EVANS, OF PIT EsBUBGH, PENNSYLVANIA, ASSIGNOIR TO PITTSBURGH PLATE GLASS COMPANY, A CORPORATION OF PENNSYLVANIA.

rLUm-oooLED none.

Application filed May 13, meV Serial No. 713,105.

To all whom, it may concern.

itlznown that 1, Athena E. Evans, a citizen of the United States, and a resident of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have made a new and useful invention in in a l luidllooled Roll, of which the following is a specification.

The invention relates to fluid cooled rolls, and is designed particularly for use in apparatus for continuously rolling a glass sheet, such as that illustrated and described in the application of Frederick Gelstharp, Serial Numher 656,441, although the roll construction is not limited to use in this particular relation. In apparatus for rolling glass, in which fluid cooled rolls are employed, it is desirable that the rolls should be cooled uniformly, as otherwise they Will 1 soon be warped out of. shape so that it is impossible to produce a sheetof uniform thickness and furthern'iore, the application of a nonuniform cooling eliiect on the glass sheet or ribbon being formed introduces Improvements strain into the sheet, increasing breakage.-

Une object of the present invention 1s the provision of improved means tor securing a uniform cooling ellect throughout the length of the roll. Other objects of the invention are the provision of rolls which may be made without dill'iculty, which are of simple construction; One einbodin'ient of the invention 51. illustrated in the accon'ipanyiug drawings, wherein:

Figure 1 is a longitudinal section through the roll. Fig. 2 is a section through one end of the roll on a larger scale than 1. Figs. 3 and st are sections through the roll not including the swivel) on the lines Ill-l ll and lV-IV of Fig. 2. And Fig. 5 is an enlarged longitudinal section through the. coupling member used at the center of the, roll. 'lhe bod ol the roll consists of a cylindrical casing 1, preferably of cast iron or steel. The interior of the roll is divided into two chambers 2 and by means of a partition 1) member t which also acts as a coupling lior the inlet pipes 5 and (5. provided with sleeve portions T and S (Fig. h) into which the ends oi the. pipes are screwed. while the partition plate 9 has an accuratelit with the l'iiire of the cylinder. At their outer ends, the pipe sections are threaded into piston members 10, 1.0, which The member El; 1s-

indicated in Figs. 2, and 3 are provided with.perforations 11 for, admitting fluid to the pipes from the swivels 12, 1:3.

'lhese swivels are each provided with the annular passages lil and Lt leading to the screw sockets l5- aud 1G, to whiclr suitable piping is attached. The annular passages communicate with the pipes 53 and (3 and with the chambers 2 and 3 surrounding the pipes by means of-the series ot' perforations l7 and 18 extending through the walls of the (using 1. lhe swivels are made tight by means of the packing rings 19, Qt: and 2.1, a skeleton cage 22 being interposed between the packing rings 20 and 21, so that the pressure imposed upon the packing rings 21 by the follower member 23 is trai'ismitted to the packing rings 24). Screwed into the right hand end of the roll is the block E l-thaving the squared end 25 by means of which the roll is turned. Thisblock is provided with a flange upon-which is screwed the ring 26 and this ring carries a plumlit ot bolts 27 engaging a ring 28 which in turn engages the follower memher 23, thus providing a means for tighteningthe packing. The block 24: is prevented from unscrewing by. means of a transverse pin 2?), which extends through the block and through the walls of the casino. At the other end of the roll, a similar block is employed at 30, such block. lu'iwever, lachii'ig the turning means 25 ot the block ll as the roll is turned from oneend only.

Each of the pipes 5 and 6 is provided with a series of perforations 31, and when ater is supplied to the outer end or the pipes through theconncetions 16. thismater flows in through the pipes and discharges through the perforations 31 to the chau'ihers and 3 through which it flows back to the outer ends of the roll and discharges through the mirlorations l'r'nleading to the outlet pipes which are connected, at 15. The arrange ment and size of-thfe perforations will depend upon conditions. the arrangement bein; preferably such that a uniform cooling ellect will be secured throughout the length of the roll. This distribution may be inlluencedhy the size of the perforations, and their spacing and it is undesirablethat the discharge at any one point along the pipe shouldbe such as to give a cold spot on the rol Due to the tactthat the roll is heat-ed i'er than at the ends, it is necessary or desirable that the coolest water of the circulating body should be supplied at the center of the roll, and for this reason, the circulation is arranged as illustrated with the inlets tin-(nigh the pipes so that they discharge at their-inner ends, thusgiving liquid of a lower temperature near the center of the rolls than at the ends,'sinee the liquid is raise d in te1nperature from the'roll by the time itreaches the outer end of the roll. The division of the roll into two chambers by means of the partition member 4 'also insures that the cooling effect secured by the liquid upon the two halves of the roll shall be substantially the same. Other advantages incident to the simplicity of the structure will be readily ap 'iarent to those skilled in-the art.

\Vhat I claim is:

1. In combination in a roll, an outer cylindrical casing, 11 pipe extending longitudinally through the casing spaced away from the inner wall thereof to provide an annular chamber, partition incaus intermediate the ends of the roll dividing said chamber and.

the passage through the pipe each into two sections, communications between the inner end 01" each of said sections of pipe and the section of the chamber surrounding it, and means for providing a circulation of cooling fluid through each pipe section and the section of the chamber surrounding it.

2.-'lu combination, a hollow roll divided adjacent its center into two chambers, and means for circulating a cooling fluid into the chambers from the ends of the roll to points adjacent the inner ends of said chambersjand then back to the outer ends thereof.

I In combination, a hollow roll divided adjacent its center into two chambers, and means ."liOl' circulating a cooling fluid into the chambers from the ends of the roll to points adjacent the inner ends of said chambers and then back to the outer ends thereof, the said means including conduits or pipes placed concentrically of said chambcrs and opening into said chambers at their inner ends. v

4. 1n combinatiom'a hollow roll divided, :uljcent itscenter into two chambers, an means for'cionelating a, cooling fluid in he chambers iron: theendsof the roll tn pointsadjacent the inner ends of said chambers and then back to the outer ends thereoii, the said means including onduits or pipes pieced concentrically of sai d chamhers and opening into said chambers at their inner ends, and constituting the inlets, by means of which, the eoolingfiuid is discharged to the annular spaces surrounding the pipes which act as outlets.

5. In combination in a roll, an outer cylindrical casing, a pipe extending longitudinally througlrthe casing spaced away from the inner wall thereof to provide an annular chamber-,partition means intermediate the ends of the roll dividing said chamber and the passage through the pipe each into two sections, communications between the inner end of each of said sections of pipe and the section of the chamber surrounding it, and means for providing a circulation of cooling fluid through each pipe section and the sectlon of the chamber surrounding it, the pipe sections constituting the inlets and the chamber sections the outlets.

6. In combination in a roll, an outer cylindrical casing, a coupling member at the center of the roll formed so as to constitute a partition dividing the roll into two chainbers, a perforated pipe extending into the roll from each end thereof and engaging said coupling, and means for circulating cooling fluid through the pipes from their outer ends. and discharging such fluid froni'the outer ends of the chambers surrounding the pipes.

7. In combination in a" roll, an outer eylindrical casing, a coupling member at the center of the roll constitute a partition dividing the roll into two chambers, a. pipe extending into the roll from each end thereof and engaging said coupling and each having its inner portion provided with a series of perforationm, and means for circulating cooling fluiddhrough the pipes from their outer ends and discharging s'uch fluid from the outer ends of the chambers surrounding the P p In testimony whereof, I have hereunto subscribed my name this 21st day of April. 1924:.

ALBERT E. EVANS.

formed so as to 

